MOAB: Mesh Oriented datABase  (version 5.3.1)
algorithm_test.cpp
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00001 /* *****************************************************************
00002     MESQUITE -- The Mesh Quality Improvement Toolkit
00003 
00004     Copyright 2004 Sandia Corporation and Argonne National
00005     Laboratory.  Under the terms of Contract DE-AC04-94AL85000
00006     with Sandia Corporation, the U.S. Government retains certain
00007     rights in this software.
00008 
00009     This library is free software; you can redistribute it and/or
00010     modify it under the terms of the GNU Lesser General Public
00011     License as published by the Free Software Foundation; either
00012     version 2.1 of the License, or (at your option) any later version.
00013 
00014     This library is distributed in the hope that it will be useful,
00015     but WITHOUT ANY WARRANTY; without even the implied warranty of
00016     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017     Lesser General Public License for more details.
00018 
00019     You should have received a copy of the GNU Lesser General Public License
00020     (lgpl.txt) along with this library; if not, write to the Free Software
00021     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 
00023     diachin2@llnl.gov, djmelan@sandia.gov, mbrewer@sandia.gov,
00024     pknupp@sandia.gov, tleurent@mcs.anl.gov, tmunson@mcs.anl.gov
00025 
00026   ***************************************************************** */
00027 // -*- Mode : c++; tab-width: 3; c-tab-always-indent: t; indent-tabs-mode: nil; c-basic-offset: 3
00028 // -*-
00029 //
00030 //   SUMMARY:
00031 //     USAGE:
00032 //
00033 // ORIG-DATE: 19-Feb-02 at 10:57:52
00034 //  LAST-MOD: 23-Jul-03 at 18:09:51 by Thomas Leurent
00035 //
00036 //
00037 // DESCRIPTION:
00038 // ============
00039 /*! \file main.cpp
00040 
00041 describe main.cpp here
00042 
00043  */
00044 // DESCRIP-END.
00045 //
00046 #include <iostream>
00047 using std::cout;
00048 using std::endl;
00049 #include <cstdlib>
00050 
00051 #include "Mesquite.hpp"
00052 #include "MeshImpl.hpp"
00053 #include "MsqError.hpp"
00054 #include "Vector3D.hpp"
00055 #include "InstructionQueue.hpp"
00056 #include "PatchData.hpp"
00057 #include "TerminationCriterion.hpp"
00058 #include "QualityAssessor.hpp"
00059 
00060 // algorythms
00061 #include "IdealWeightInverseMeanRatio.hpp"
00062 #include "ConditionNumberQualityMetric.hpp"
00063 #include "LPtoPTemplate.hpp"
00064 #include "LInfTemplate.hpp"
00065 #include "FeasibleNewton.hpp"
00066 #include "ConjugateGradient.hpp"
00067 #include "TestUtil.hpp"
00068 using namespace MBMesquite;
00069 
00070 int main()
00071 {
00072     MsqPrintError err( cout );
00073     MBMesquite::MeshImpl mesh;
00074 
00075     std::string file_name = TestDir + "unittest/mesquite/3D/vtk/tets/untangled/tire.vtk";
00076     mesh.read_vtk( file_name.c_str(), err );
00077     if( err ) return 1;
00078 
00079     // creates an intruction queue
00080     InstructionQueue queue1;
00081 
00082     // creates a mean ratio quality metric ...
00083     IdealWeightInverseMeanRatio mean( err );
00084     if( err ) return 1;
00085 
00086     LPtoPTemplate obj_func( &mean, 1, err );
00087     if( err ) return 1;
00088 
00089     // creates the optimization procedures
00090     //   ConjugateGradient* pass1 = new ConjugateGradient( obj_func, err );
00091     FeasibleNewton pass1( &obj_func );
00092 
00093     // perform optimization globally
00094     pass1.use_global_patch();
00095     if( err ) return 1;
00096 
00097     QualityAssessor mean_qa = QualityAssessor( &mean );
00098 
00099     //**************Set termination criterion****************
00100 
00101     // perform 1 pass of the outer loop (this line isn't essential as it is
00102     // the default behavior).
00103     TerminationCriterion tc_outer;
00104     tc_outer.add_iteration_limit( 1 );
00105     pass1.set_outer_termination_criterion( &tc_outer );
00106 
00107     // perform the inner loop until a certain objective function value is
00108     // reached.  The exact value needs to be determined (about 18095).
00109     // As a safety, also stop if the time exceeds 10 minutes (600 seconds).
00110     TerminationCriterion tc_inner;
00111     tc_inner.add_absolute_quality_improvement( 13975 );
00112     //  tc_inner.add_absolute_quality_improvement( 13964.93818 );
00113     tc_inner.add_cpu_time( 1800 );
00114 
00115     pass1.set_inner_termination_criterion( &tc_inner );
00116 
00117     // used for cg to get some info
00118     //  pass1->set_debugging_level(2);
00119 
00120     // adds 1 pass of pass1 to mesh_set1
00121     queue1.add_quality_assessor( &mean_qa, err );
00122     if( err ) return 1;
00123     queue1.set_master_quality_improver( &pass1, err );
00124     if( err ) return 1;
00125     queue1.add_quality_assessor( &mean_qa, err );
00126     if( err ) return 1;
00127     mesh.write_vtk( "original_mesh.vtk", err );
00128     if( err ) return 1;
00129 
00130     // launches optimization on mesh_set1
00131     queue1.run_instructions( &mesh, err );
00132     if( err ) return 1;
00133 
00134     mesh.write_vtk( "smoothed_mesh.vtk", err );
00135     if( err ) return 1;
00136     print_timing_diagnostics( cout );
00137     return 0;
00138 }
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